Parkinson's disease is a progressive nervous system disorder that affects movement. Symptoms start gradually, sometimes starting with a barely noticeable tremor in just one hand. Tremors are common, but the disorder also commonly causes stiffness or slowing of movement. Due to its extreme toxicity, Paraquat is a weed-killing herbicide restricted to commercial use exclusively. Farmers and agricultural laborers are the most vulnerable to paraquat exposure, but residents living near industrial farms may also be at danger. Login Login 0 repins 0 comments 0 likes